$ show cocos/cocos-engine
Cocos Creator engine runtime is a cross-platform 2D/3D game engine framework written in TypeScript and C++. It provides a component-entity architecture with scene graph, rendering pipelines (forward/deferred/custom), physics (PhysX, Bullet, Box2D, builtin), animation (marionette state machine, pose graph, Spine, DragonBones), audio, UI, particle systems, and asset management. The engine is designed to be used with the Cocos Creator editor but can run standalone. It abstracts platform-specific APIs (graphics, input, audio, system) behind a common interface, supporting Web, iOS, Android, Windows, macOS, Linux, and various mini-game platforms. Key entry points include the Director, Scene, Node, Component, and the rendering pipeline. External dependencies include graphics APIs (Vulkan, Metal, GLES, WebGPU), physics libraries (PhysX, Bullet, Box2D), and scripting engines (V8, SpiderMonkey, JavaScriptCore).
The LLM identified 3 files worth highlighting for reuse:
Implements a type-safe event target with on/off/emit/dispatch, supporting both synchronous and asynchronous delegates. Uses a callback invoker pattern with efficient listener management. Can be extracted as a standalone event bus for any TypeScript project.
Provides @ccclass and @serializable decorators that define serialization metadata for classes. Supports property type inference, default values, and custom serialization. This pattern is reusable for any TypeScript project needing declarative serialization configuration.
A generic binary archive for reading/writing structured data with support for primitive types, strings, arrays, and nested objects. Uses a stream-based interface and is independent of the engine. Can be extracted for any C++ project requiring compact binary serialization.